Astronomic events and Ufo's from Earth are not merely products of some profound psychological phenomenon; they are products of the physical laws and assumptions behind astrophysics. Ufos and their structures are simply structures of matter, whose shape and movement are determined by our astrophysical observations.
If UFOs are the secrets of alien intelligence, however, they are no more secrets than anything else about us. If they exist, then we will have to address the special dimensions of our own cosmos—rather than just collect as much observational evidence as possible. I would argue that it is absurd to insist that our inability to see things that are literally in the sky point to our unreality, because no one would confuse earthly objects with UFOs if they existed.*